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Stable dielectric response in lead-free relaxor K_(0.5)Na_(0.5)NbO_(3)-SrTiO_(3) thin films

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Journal of Advanced Dielectrics 2014年第2期4卷 41-45页

作者： A.Eršte A.Kupec B.Kmet B.malič V.Bobnar Condensed Matter Physics Department Jozef Stefan Institute Jamova cesta 39SI-1000 LjubljanaSlovenia Electronic Ceramics Department Jozef Stefan Institute Jamova cesta 39SI-1000 LjubljanaSlovenia Jozef Stefan International Postgraduate School Jamova cesta 39 SI-1000 LjubljanaSlovenia

K_(0.5)Na_(0.5)NbO_(3)-SrTiO_(3)(KNN-STO)thin films of different compositions were prepared by the chemical solution deposition *** structural investigations confirmed the formation of perovskite solid solution in all developed films,dieletric experiments revealed a relaxor broad dispersive maximum in the sample with 15 mol%of STO,exhibiting for a thin film high ε′~330 at~*** history-dependent effects of this relaxor sample were compared to those of KNN STO ceramics and,furthermore,shown to be much weaker than in widely used lead-based ferroelectric and relaxor(Pb,L a)(Zr,Ti)O_(3) ceramics:While fatigue endurance results revealed a slight drop in polarization after 3 × 10^(5) switching cycles,the results of aging of the dielectric constant revealed no notable decrease in its values after 10^(6)s.

关键词： Lead-free ceramic thin films relaxor ferroelectrics electrical fatigue and aging

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图说马里文化遗产

中国投资(中英文) 2019年第18期 52-55页

作者： mali Tourism Promotion Agency 马里国家旅游局

传统民居在邦贾加拉悬崖上,多贡族人用banco(由泥浆和谷物混合的一种材料)建造的传统居民建筑。这些尖顶泥屋构成了上百个村庄。多贡族村庄被联合国教科文组织列为世界遗产。Traditional house|Traditional habitat (building) in banco... 详细信息

传统民居在邦贾加拉悬崖上,多贡族人用banco(由泥浆和谷物混合的一种材料)建造的传统居民建筑。这些尖顶泥屋构成了上百个村庄。多贡族村庄被联合国教科文组织列为世界遗产。Traditional house|Traditional habitat (building) in banco. Dogon country classified as a UNESCO world heritage site.

关键词：文化遗产世界文化遗产名录清真寺

高功率光纤激光器和放大器的非线性效应管理新进展

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激光与光电子学进展 2007年第6期44卷 27-33页

作者：廖素英巩马理清华大学精密仪器与机械学系光子与电子研究中心北京100084

受激布里渊散射、受激拉曼散射、自相位调制等非线性效应限制了高功率光纤激光器、放大器的输出功率和传输特性。通过改进光纤的几何结构、材料成分、制作工艺、工作环境等可以克服这些限制。在分析了光纤激光器、放大器中几种非线性效... 详细信息

受激布里渊散射、受激拉曼散射、自相位调制等非线性效应限制了高功率光纤激光器、放大器的输出功率和传输特性。通过改进光纤的几何结构、材料成分、制作工艺、工作环境等可以克服这些限制。在分析了光纤激光器、放大器中几种非线性效应的产生机理、功率阈值特点后,着重介绍了采用大模场光纤设计、变化光纤掺杂成分及分布、纳米粒子直接掺杂技术以及控制应力、温度场调制等新方法、新技术在非线性效应管理中的应用,最后指出合理的方案。

关键词：非线性效应管理大模面积光纤纳米粒子直接掺杂功率阈值光子晶体光纤

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Effectiveness of Hand Care Therapy and Garden Walks That Are Conscious of the Stimulation of the Five Senses for Recovery of Cognitive and Mental and Physical Dysfunction Caused by COVID-19

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Open Journal of Therapy and Rehabilitation 2021年第1期9卷 10-27页

作者： Seigo koura Akiko Ikeda Risa Semba Megumi Ito Kazuho Nagao Kentaro Higashi Yusuke Kumura Hiroki Yokota Shinya Matsutani Yasuhiko Fujioka Faculty of Rehabilitation Nishikyusyu University Kanzaki Japan Sophia Phyto-Therapy College Tokyo Japan Social Welfare Corporation Kanjikai Miyakonojyo Japan Department of Rehabilitation Center St. Mary’s Hospital Kurume Japan Fujioka Hospital Saga Japan

The Japan Dementia Prevention Society conducted a questionnaire survey of dementia specialists conducted in August 2020. Regarding the worsening of symptoms in people with dementia, 8% answered that they “accept more” and 32% answered that they “recognize a minority”. In the previous research report (Open Journal of Therapy and Rehabilitation Vol.8 No.3), we examined whether hand care therapy (HCT) as one of the passive horticultural therapy was effective in preventing dementia/MCI. Start of the test in August 2018 (I: BL) to February 2020 (VII: 18M) was, the use of HCT was to be effective in preventing dementia and MCI illness and slowing progression. Due to the COVID19 pandemic, VIII (24M) was evaluated in August 2020, and IX (27M) also measured ANS during activity. At that time, they divided into the Group E who had refrained from welfare facilities for the elderly due to the influence of COVID19 and the Group F who HCT continued. In the evaluation of VIII (24M), it was found that the cognitive function of the Group E was significantly reduced compared to VII, and Group F did not show a significant decrease. ADL decreased and depressive symptoms increase by continuing a life with less going out due to the influence of COVID 19 regardless of the use of the facility. It became clear that both Group E and Group F show good changes in ANS balance in the IX. Therefore, by utilizing horticultural therapy that the power of nature and plants in addition to utilizing welfare facilities for the elderly, cognitive impairment in COVID 19. It was expected to lead to prevention and prevention of negative psychology and behavior such

关键词： Dementia MCI ANS Hand Care Prevention COVID-19

粤港澳大湾区创新发展的进展、问题与战略思考

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地理科学进展 2022年第9期41卷 1555-1565页

作者：刘毅任亚文马丽王云粤港澳大湾区战略研究院广州510070 中国科学院地理科学与资源研究所中国科学院区域可持续发展分析与模拟重点实验室北京100101 中国科学院大学资源与环境学院北京100049 对外经济贸易大学政府管理学院北京100029

建设国际科技创新中心是粤港澳大湾区打造国际一流湾区的战略方向,也是中国应对未来全球竞争的重要空间载体。值《粤港澳大湾区发展规划纲要》颁布实施3周年之际,论文通过梳理粤港澳大湾区创新发展的主要进展、问题,对新形势下建设粤港... 详细信息

建设国际科技创新中心是粤港澳大湾区打造国际一流湾区的战略方向,也是中国应对未来全球竞争的重要空间载体。值《粤港澳大湾区发展规划纲要》颁布实施3周年之际,论文通过梳理粤港澳大湾区创新发展的主要进展、问题,对新形势下建设粤港澳大湾区国际科技创新中心进行战略再思考。粤港澳大湾区已初步进入“创新经济”发展阶段,平台建设、人才集聚与政策配套持续强化,多样化的跨区域创新协同模式不断涌现,但是在成果质量、资源配置、人才结构等方面存在现实挑战。在继续巩固粤港澳大湾区国际科技创新中心建设已有的基础上,未来应从“创新资源的获取与创新能力的提升”“创新资源的协同与再分配”等方面持续进行战略优化与调整。

关键词：创新科技战略粤港澳大湾区

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Correlations between Motor Ability with Gait Speed and Cognitive Functions in Rehabilitation Users

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Open Journal of Therapy and Rehabilitation 2022年第1期10卷 1-8页

作者： Hiroya Miyabara Seigo koura Moemi Matsuo Makoto Uchinoura Yuki Kishikawa Yuji Yamaguchi Youhei Komatsu Seijiro Nishimura Shinichi Shibata Hajime Shibata Faculty of Rehabilitation Nishikyusyu University Kanzaki Japan Kurume Rehabilitation Hospital Kurume Japan

Purpose: To compare and examine motor and cognitive functions in people who require support, and in healthy elders. Method: The variables of age, BMI, educational background, blood pressure, grip strength, knee extension, gait speed, MMSE, and subjective health feeling for 36 rehabilitation users and 22 healthy elders were assessed. We compared and examined motor and cognitive functions in rehabilitation users who need support and healthy elders. Results: The percentage of MMSE scores with 27 points or higher and that of subjective health feeling with 3 points or higher were significantly higher in healthy elders than in rehabilitation users. Systolic and diastolic blood pressure were significantly higher in rehabilitation users than in healthy elders. Gait speed and MMSE scores were significantly higher in healthy elders than rehabilitation users. Conclusion: Gait speed could be used for physical fitness in elders. Gait speed was the best physical fitness measurement for elders. Gait speed of rehabilitation users was strongly related to MMSE scores. Gait speed could be a determinant of MMSE scores.

关键词： Elderly Gait Speed Motor Ability Rehabilitation Users The Long-Term Care Insurance

Evaluation of the Tokyo Cognitive Assessment for Predicting Cognitive Impairment in Rehabilitation Users

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Open Journal of Therapy and Rehabilitation 2022年第2期10卷 54-61页

[Purpose] This study aimed to evaluation of the Tokyo cognitive assessment (Toca) for predicting cognitive impairment in rehabilitation users. [Method] The variables of age, BMI, educational background, Toca for 36 rehabilitation users and 22 healthy elder were assessed. We compared cognitive functions in rehabilitation users who need support and healthy elders. [Results] Of the Toca 1 to 11 trials, there was a significant difference other than 9, 10 rials. The Toca scores with 8 points higher were significantly higher in healthy elders than in rehabilitation users. The area under the receiver-operator curve (AUC) for predicting mild cognitive impairment (MCI) by the Toca was 0.874. Using a cut-off point of 19/20, the Toca demonstrated a sensitivity of 83.9% and a sensitivity of 85.0% in diagnosing MCI. [Conclusion] The Toca is a brief cognitive screening tool with high sensitivity and specificity for detecting MCI as currently conceptualized in rehabilitation users.

关键词： Tokyo Cognitive Assessment Mild Cognitive Impairment Rehabilitation Users

平均波长和输出功率稳定性高的掺铒光子晶体光纤超荧光光源的实验研究

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中国激光 2015年第4期42卷 104-109页

作者：辛璟焘张海涛郝赫巩马理清华大学精密仪器系北京100084

采用掺铒光子晶体光纤代替传统掺铒光纤来提高超荧光光纤光源输出的功率稳定性和平均波长稳定性。在-45℃--70℃的全温区范围内,对超荧光光纤光源的光纤长度和半导体激光器（LD）抽运功率进行优化,并提出了用插值法进行LD抽运功率的优... 详细信息

采用掺铒光子晶体光纤代替传统掺铒光纤来提高超荧光光纤光源输出的功率稳定性和平均波长稳定性。在-45℃--70℃的全温区范围内,对超荧光光纤光源的光纤长度和半导体激光器（LD）抽运功率进行优化,并提出了用插值法进行LD抽运功率的优化方法,在光纤长度优化的基础上,高效、精确地优化了抽运功率,改善了光源的平均波长稳定性。经过优化的光源,在-45℃~70℃的全温区范围内平均波长变化量为0.67×10-6/℃,输出功率稳定性为0.37%。

关键词：光纤光学超荧光光纤光源平均波长稳定性光子晶体光纤

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Design Optimization of Cam &Follower Mechanism of an Internal Combustion Engine for Improving the Engine Efficiency

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Modern Mechanical Engineering 2012年第3期2卷 114-119页

作者： Mahesh R. mali Prabhakar D. Maskar Shravan H. Gawande Jay S. Bagi Department of Mechanical Engineering M. E. Society’s College of Engineering Pune India Department of Mechanical Engineering Rajarambapu Institute of Technology Islampur India KIT College of Engineering Kolhapur India Research and Development MAN Trucks India Pvt. Ltd. Pune India

The current cam and follower mechanism in four stroke internal combustion engine employs a flat follower. In this work an attempt is made to change the flat face of follower to a curved face follower, so that the required point contact can be achieved. As line contact between existing cam and follower mechanism results in high frictional losses which results in low mechanical efficiency. It is observed that the frequency of vibration in the existing and modified cam and follower mechanism remains almost same. The finite element approach is used to perform the analysis.

关键词： Follower & Cam Point Contact Vibration Analysis Finite Element Approach [FEA]